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Military Engines
Proven Power for the F-35 Lightning II — In Flight, In Production
Providing Fifth-Generation Power
Pratt & Whitney’s F135 engine powers the F-35 Lightning
II, the single-engine strike fighter developed by Lockheed
Martin in conjunction with Northrop Grumman and BAE
Systems. The F-35 includes three variants – the F-35A
(Conventional Takeoff and Landing), F-35B (Short Takeoff and
Vertical Landing) and F-35C (Carrier Variant).
Photo Credit: Pratt & Whitney
Derived from Proven Technology
The F135 has evolved from the proven F119-PW-100 engine, the
technologically advanced turbofan engine that exclusively powers
the U.S. Air Force’s F-22 Raptor. In service since 2003, the F119
engine has the distinction of being the safest fighter engine
introduced in U.S. Air Force history. The F135 offers the same
operational pedigree with proven stealth capabilities, along with
features such as advanced prognostics and health-management
International Participation
The F-35 is the first truly international fighter aircraft development
program – developed to serve the United States, the United
Kingdom, Italy, the Netherlands, Turkey, Canada, Australia, Denmark,
Norway and other allied nations. To support its customers,
Pratt & Whitney has partnered with the best aerospace companies
in the world including Rolls Royce and UTC Aerospace Systems
to manufacture critical components of the F135, with the goal of
producing the most advanced propulsion system the world has
ever seen.
Since powering the F-35’s first flight in December 2006, the F135 has
maintained high readiness levels that have enabled the program to meet flight
test objectives for all three aircraft variants. Supportability features are designed
to offer ease of maintenance while achieving unprecedented engine reliability
and maintainability. Networked maintenance and logistics support capabilities
are projected to significantly lower maintenance costs and increase mission
availability. Likewise, common sustainment solutions across the services and
partner nations offer economies of scale targeted to lower long-term costs
relative to current engine fleets.
The F135 program plans to continue to drive down cost as it ramps up
production. The F135 produces 20% more thrust and weighs 1,500 pounds
more than the F119. The F135 program objective is to achieve comparable
production costs as the F119.
Pratt & Whitney. A generation ahead
Product Facts
Engine Characteristics
Maximum thrust class (CTOL/CV)
Intermediate thrust class (CTOL/CV)
Inlet diameter
Maximum diameter
43,000 pounds (191.3 kN)
28,000 pounds (128.1 kN)
220 inches (5.59 m)
43 inches (1.09 m)
46 inches (1.17 m)
F135 Program Milestones
October 2003
April 2004
December 2006
June 2008
February 2010
March 2010
June 2010
December 2010
October 2011
March 2012
March 2013
August 2013
November 2014
July 2015
F135-PW-100 first engine to test
F135-PW-600 first engine to test
F-35A first flight
F-35B first flight
F-35A, F-35C initial service release qualification
F-35B first vertical landing
F-35C first flight
F-35B initial service release qualification
F-35B first shipboard landing
F-35A first training flight at Eglin Air Force Base
F-35B first operational vertical landing at Marine Corps Air Station Yuma
F-35B first nighttime shipboard operations
F-35C Navy aircraft testing on board U.S.S. Nimitz
F-35B U.S.M.C. declares Initial Operational Capability (IOC)
Maximum thrust class (STOVL)
Intermediate thrust class (STOVL)
Short takeoff thrust class (STOVL)
Hover thrust class
41,000 pounds (182.4 kN)
27,000 pounds (120.1 kN)
40,740 pounds (181.2 kN)
40,650 pounds (180.8 kN)
369 inches (9.37 m)
Military Applications
F-35 Lightning II A, B, C
©2016 United Technologies Corporation. This document has been publicly released. This document does not contain any export regulated technical data.
This document contains forward-looking statements concerning future business opportunities. Actual results may differ materially from those projected as a result of certain risks and uncertainties, including but
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Composite Photo: Lockheed Martin
©2016 United Technologies Corporation. This document has been publicly released.
This document does not contain any export regulated technical data.
F135 Engine
Proven Power for the F-35 Lightning II —
In Flight, In Production